<template>
	<!-- 登录页面的整体盒子 -->
	<div class="login-container">
		<!-- 登录的盒子 -->
		<div class="login-box">
			<!-- 标题的盒子 -->
			<div class="title-box"></div>
			<!-- 登录的表单区域 -->
			<el-form :model="loginForm" :rules="loginRules" ref="loginRef">
				<!-- 用户名 -->
				<el-form-item prop="username">
					<el-input v-model="loginForm.username" placeholder="请输入用户名" prefix-icon="el-icon-user"></el-input>
				</el-form-item>
				<!-- 密码 -->
				<el-form-item prop="password">
					<el-input v-model="loginForm.password" type="password" placeholder="请输入密码"
						prefix-icon="el-icon-lock"></el-input>
				</el-form-item>
				<el-form-item>
					<el-button type="primary" class="btn-login" @click="login">登录</el-button>
					<el-link type="info" @click="doReg">去注册</el-link>
				</el-form-item>
			</el-form>
		</div>
	</div>
</template>

<script>
	export default {
		name: 'Login',
		data() {
			return {
				// 保存表单数据
				loginForm: {
					username: '',
					password: ''
				},
				// 验证表单规则
				loginRules: {
					username: [{
							required: true,
							message: '请输入用户名',
							trigger: 'blur'
						},
						{
							pattern: /^[a-zA-Z][a-zA-Z0-9]{0,9}$/,
							message: '用户名必须是1-10的字母数字,数字不能开头',
							trigger: 'blur'
						}

					],
					password: [{
							required: true,
							message: "请输入密码",
							trigger: 'blur'
						},
						{
							pattern: /^\S{6,15}$/,
							message: '密码必须是6-15的非空字符',
							trigger: 'blur'
						}
					]
				}
			}
		},
		methods: {
			login() {
				this.$refs.loginRef.validate(async (valid) => {
					if (!valid) return // 检验失败
					// 兜底检验成功，发送请求
					const {
						data: res
					} = await this.$http.post('/api/login', this.loginForm)
					// 登录失败，提示用户
					if (res.code !== 0) return this.$message.error(res.message)
					// 登录成功，提示用户
					this.$message.success(res.message)
					//  保存token
					// this.$store.commit('updateToken', res.token)
					localStorage.setItem('token', res.token)
					// 跳转到首页
					this.$router.push('/')
				})
			},
			doReg() {
				this.$router.push('/reg')
			}
		}
	}
</script>

<style lang="less" scoped>
	.login-container {
		background: url('../../assets/images/login_bg.jpg') center;
		background-size: cover;
		height: 100%;
	}

	.login-box {
		width: 400px;
		height: 270px;
		background-color: #fff;
		border-radius: 3px;
		position: absolute;
		left: 50%;
		top: 50%;
		transform: translate(-50%, -50%);
		padding: 0 30px;
		box-sizing: border-box;
	}

	.title-box {
		height: 60px;
		background: url('../../assets/images/login_title.png') center no-repeat;
	}

	.btn-login {
		width: 100%;
	}
</style>
